PHP install the spool extension

php install swoole Expand ：
https://zhuanlan.zhihu.com/p/95868016

centos7.4 install openssl：https://blog.csdn.net/weixin_41858542/article/details/81220160

[[email protected]-20-2-centos include]# php -i | grep php.ini
Configuration File (php.ini) Path => /etc
Loaded Configuration File => /etc/php.ini
[[email protected]-20-2-centos include]# vim /etc/php.ini

PHP install Swoole Expand :
https://www.jianshu.com/p/462013f18177